Psion Teklogix 7527S User's Guide download pdf (Page 189)

Chapter 19: Windows Shell

Windows Shell

Psion Teklogix Mobile Devices SDK Developers Guide 177

19.1 Windows Shell

On Psion Teklogix computers, the user’s level of access to the Windows shell can be restricted to

prevent access to unnecessary or potentially harmful aspects of the system.

The following Windows shell features can be set and queried by the Mobile Devices SDK:

• Setting Windows security

• Enabling and disabling shell access

19.2 Setting Windows Security

Psion Teklogix computers have the following Windows shell security levels:

•User

• Supervisor

•Teklogix

These levels can also be controlled through the Security item on the Windows Start menu.

User security level: This is the most restrictive security level. When this level is set on a

Psion Teklogix computer, the computer can be used to run applications, but there is limited access

to terminal configuration features. No password is needed to access a computer when it is in

this mode.

In user mode, the following restrictions apply:

• On the Windows Start menu, the Programs, Settings, and Run items are not available.

• If the Windows desktop is accessible, the My Computer and Recycle Bin icons are not

available.

Supervisor security level: This security level allows access to most of the configuration features

of the Psion Teklogix computer. The supervisor password can be changed when the computer is in

supervisor mode or in Teklogix mode.

Teklogix security level: This security level gives unrestricted access to the Psion Teklogix com-

puter. The Teklogix password cannot be changed.

19.3 Enabling And Disabling The Windows Shell

The Mobile Devices SDK provides applications with the ability to enable and disable the

Windows shell. By default, the shell is enabled. When the shell is disabled, the following features

are not available:

• The Windows Start button

• The Windows Icon Tray

• The Windows Task Manager

The shell must be enabled before the application exits. If the application terminates leaving the

shell disabled, the shell can only be enabled again by a warm reset or a cold reset.

19.4 Security Level Change Event

An event is generated when the Windows security level is changed through the Mobile

Devices SDK or by the user through the configuration dialog. This event is only detected while a

listener for the event is registered.

1 2 ... 184 185 186 187 188 189 190 191 192 193 194 ... 261 262

No comments

Psion Teklogix 7527S User's Guide Page 189